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350 - 1100 nm Spectral Range

Model Number	Active Area	Active Area Dimensions	Responsivity	Dark Current	Capacitance	Max Reverse Bias	Input Bias Current	Package
UDT-451	5.1 mm²	2.54 Φ mm	0.65 A/W	0.25 nA	15 pF	30 V **	30 pA	29 / DIP
UDT-455	5.1 mm²	2.54 F mm	0.65 A/W	0.25 nA	15 pF	30 V **	±80 pA	30 / TO-5
UDT-455HS	5.1 mm²	2.54 Φ mm	0.65 A/W	0.25 nA	60 pF	30 V **	±80 pA	30 / TO-5
UDT-455LN**	5.1 mm²	2.54 Φ mm	0.65 A/W	0.25 nA	15 pF	30 V **	0.15 pA	30 / TO-5
UDT-020D	16 mm²	4.57 Φ mm	0.65 A/W	0.5 nA	60 pF	30 V **	±80 pA	31 / TO-8
UDT-555D	100 mm²	11.3 Φ mm	0.65 A/W	2 nA	300 pF	30 V **	±40 pA	32 / Special

200 - 1100 nm Spectral Range

Model Number	Active Area	Active Area Dimensions	Responsivity	Max Reverse Bias	Package
UDT-455UV	5.1 mm²	2.54 Φ mm	0.14 A/W	5 V **	30 / TO-5
UDT-455UV / LN**	5.1 mm²	2.54 Φ mm	0.14 A/W	5 V **	30 / TO-5
UDT-020UV	16 mm²	4.57 Φ mm	0.14 A/W	5 V **	31 / TO-8
UDT-055UV	50 mm²	7.98 Φ mm	0.14 A/W	5 V **	32 / Special
UDT-555UV	100 mm²	11.3 Φ mm	0.14 A/W	5 V **	32 / Special
UDT-555UV / LN**	100 mm²	11.3 Φ mm	0.14 A/W	5 V **	32 / Special

Model Number	Supply Voltage 2	Package
UDT-451	---	29 / DIP
UDT-455	---	30 / TO-5
UDT-455HS	---	30 / TO-5
UDT-455LN**	---	30 / TO-5
UDT-020D	---	31 / TO-8
UDT-555D	---	32 / Special

** LN - Series Devices are to be used with a 0V Bias.
* Non-Condensing temperature and Storage Range, Non-Condensing Environment.